Royale Noir is a theme that was developed by Microsoft while developing the Media Center theme. It was never made to the public for some unknown reasons. Royale Noir is nothing but a dark colored version of the original Royale theme.

Follow these steps to get the Royale Noir theme:
1. Get Royale Noir theme from here.
http://ucash.in/2a8ee8d
2. Use your file compression manager to extract the contents of this file in a folder.
3. Rename the folder to Royale Noir.
4. Copy this folder and paste it in: "c:\windows\resources\themes\"
5. Run the "luna.msstyles" by double clicking on it.
6. Select "Royale Noir" in the color scheme drop down menu.
Now, you have Royale Noir installed in your computer.